Infrastructure re-purposed RSS signature in mobile device localization

Abstract

A method and system of infrastructure re-purposed RSS signatures for mobile device indoor navigation and positioning. The method comprises determining a common spatial region in accordance with a first spatial region partially superimposed upon an at least a second spatial region, the first and at least a second spatial regions associated with a first and an at least a second wireless communication received signal strength (RSS) signatures respectively; and generating, based at least in part on the first and at least a second RSS signatures, a re-purposed RSS signature associated with the common spatial region.

What is claimed is: 
     
       1. A method comprising:
 determining a common spatial region in accordance with a first spatial region partially superimposed upon an at least a second spatial region, the first and at least a second spatial regions associated with a first and an at least a second wireless communication received signal strength (RSS) signatures respectively; and 
 generating, based at least in part on the first and at least a second RSS signatures, a re-purposed RSS signature associated with the common spatial region, wherein the re-purposed RSS signature comprises one of a weighted RSS mean value and a weighted RSS variance value, the weighted RSS mean value and the weighted RSS variance value being computed based at least in part on respective RSS mean values and respective RSS variance values associated with the first and the at least a second spatial regions, the weighted RSS mean value being computed based at least in part on a proportion of overlap in the first and the at least a second spatial regions. 
 
     
     
       2. The method of  claim 1  wherein at least one of the first and at least a second wireless communication RSS signatures are established based at least in part on wireless data communication between a mobile device and a wireless access point (AP) device. 
     
     
       3. The method of  claim 2  wherein the wireless data communication is in accordance with at least one of a WiFi and a Bluetooth Low Energy (BLE) communication protocol. 
     
     
       4. The method of  claim 1  wherein the at least one of the first and the at least a second spatial region is directed to a first pedestrian usage purpose and the common spatial region encompasses a second pedestrian usage purpose, the first and second pedestrian usage purposes associated with a first and a second pedestrian traversal characteristics respectively. 
     
     
       5. The method of  claim 1  wherein the first and the at least a second RSS signatures comprises at least one of: a first and an at least a second RSS mean values respectively, and a first and an at least a second RSS variance values respectively. 
     
     
       6. The method of  claim 1  wherein the weighted RSS variance value is computed based at least in part on a proportion of overlap in the first and the at least a second spatial regions. 
     
     
       7. The method of  claim 1  further comprising:
 deploying the re-purposed RSS signature as representative of a location encompassed by the common spatial region; and 
 localizing a mobile device under traversal in accordance with the re-purposed RSS signature and the location. 
 
     
     
       8. A server computing system comprising:
 a processor; and 
 a memory including instructions when executed in the processor causing operations comprising:
 determining a common spatial region in accordance with a first spatial region partially superimposed upon an at least a second spatial region, the first and at least a second spatial regions associated with a first and an at least a second wireless communication received signal strength (RSS) signatures respectively; and 
 generating, based at least in part on the first and at least a second RSS signatures, a re-purposed RSS signature associated with the common spatial region, wherein the re-purposed RSS signature comprises one of a weighted RSS mean value and a weighted RSS variance value, the weighted RSS mean value and the weighted RSS variance value being computed based at least in part on respective RSS mean values and respective RSS variance values associated with the first and the at least a second spatial regions, the weighted RSS mean value being computed based at least in part on a proportion of overlap in the first and the at least a second spatial regions. 
 
 
     
     
       9. The server computing system of  claim 8  wherein at least one of the first and at least a second wireless communication RSS signatures are established based at least in part on wireless data communication between a mobile device and a wireless access point (AP) device. 
     
     
       10. The server computing system of  claim 9  wherein the wireless data communication is in accordance with at least one of a WiFi and a Bluetooth Low Energy (BLE) communication protocol. 
     
     
       11. The server computing system of  claim 8  wherein the at least one of the first and the at least a second spatial region is directed to a first pedestrian usage purpose and the common spatial region encompasses a second pedestrian usage purpose, the first and second pedestrian usage purposes associated with a first and second pedestrian traversal characteristics respectively. 
     
     
       12. The server computing system of  claim 8  wherein the first and the at least a second RSS signatures comprises at least one of: a first and an at least a second RSS mean values respectively, and a first and an at least a second RSS variance values respectively. 
     
     
       13. The server computing system of  claim 8  wherein the weighted RSS variance value is computed based at least in part on a proportion of overlap in the first and at least a second spatial regions. 
     
     
       14. The server computing system of  claim 8 , the instructions when executed in the processor causing operations further comprising:
 deploying the re-purposed RSS signature as representative of a location encompassed by the common spatial region; and 
 localizing a mobile device under traversal in accordance with the re-purposed RSS signature and the location.